Justin Bieber and Hailey Baldwin have always been close but they sparked dating rumours again after spending a LOT of time together over the New Year.

Now the pair appear to have confirmed they are together by locking lips on the dancefloor at a New Year's Eve party - and Justin wants everyone to know they kissed up a storm.

The 21-year-old singer shared a blurry snap of the PDA-filled night with Hailey, 19, in a pair of very short denim shorts and a loose white croptop while on holiday on Saint Barthélemy in the Caribbean.

Fans went wild and one posted underneath: "OH MY GOD YOU ARE ADORABLE."

The pair lock lips on New Year's Eve (Image: justinbieber/Instagram)

"Justin and Hailey were making out for everyone to see at a New Year's Eve party thrown by Richie Akiva," a source previously told TMZ.

Justin and Hailey reportedly flaunted their budding romance in front of 200 people at the bash thrown at a villa.

They certainly haven't done much to dampen rumours recently and shared a number of flirty snaps as Justin finally moves on from ex Selena Gomez. (We're still very upset).